From 122786d0e0170c73536360b705af711e1338adbf Mon Sep 17 00:00:00 2001 From: NicolasDorier Date: Fri, 22 Jul 2016 08:27:55 +0900 Subject: [PATCH] Consensus: Remove ISM --- qa/rpc-tests/bip65-cltv-p2p.py | 40 +++++++++++++++---------------- qa/rpc-tests/bip65-cltv.py | 3 ++- qa/rpc-tests/bipdersig-p2p.py | 42 ++++++++++++++++---------------- src/chainparams.cpp | 17 ++++++------- src/consensus/params.h | 8 +++---- src/main.cpp | 44 ++++++++++------------------------ src/rpc/blockchain.cpp | 38 +++++++++++++---------------- 7 files changed, 84 insertions(+), 108 deletions(-) diff --git a/qa/rpc-tests/bip65-cltv-p2p.py b/qa/rpc-tests/bip65-cltv-p2p.py index 754b6873b7..e903b2fbf0 100755 --- a/qa/rpc-tests/bip65-cltv-p2p.py +++ b/qa/rpc-tests/bip65-cltv-p2p.py @@ -71,9 +71,9 @@ class BIP65Test(ComparisonTestFramework): self.nodeaddress = self.nodes[0].getnewaddress() self.last_block_time = int(time.time()) - ''' 98 more version 3 blocks ''' + ''' 398 more version 3 blocks ''' test_blocks = [] - for i in range(98): + for i in range(398): block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) block.nVersion = 3 block.rehash() @@ -118,24 +118,6 @@ class BIP65Test(ComparisonTestFramework): height += 1 yield TestInstance([[block, True]]) - ''' - Check that the new CLTV rules are enforced in the 751st version 4 - block. - ''' - spendtx = self.create_transaction(self.nodes[0], - self.coinbase_blocks[1], self.nodeaddress, 1.0) - cltv_invalidate(spendtx) - spendtx.rehash() - - block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) - block.nVersion = 4 - block.vtx.append(spendtx) - block.hashMerkleRoot = block.calc_merkle_root() - block.rehash() - block.solve() - self.last_block_time += 1 - yield TestInstance([[block, False]]) - ''' Mine 199 new version blocks on last valid tip ''' test_blocks = [] for i in range(199): @@ -169,6 +151,24 @@ class BIP65Test(ComparisonTestFramework): height += 1 yield TestInstance([[block, True]]) + ''' + Check that the new CLTV rules are enforced in the 951st version 4 + block. + ''' + spendtx = self.create_transaction(self.nodes[0], + self.coinbase_blocks[1], self.nodeaddress, 1.0) + cltv_invalidate(spendtx) + spendtx.rehash() + + block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) + block.nVersion = 4 + block.vtx.append(spendtx) + block.hashMerkleRoot = block.calc_merkle_root() + block.rehash() + block.solve() + self.last_block_time += 1 + yield TestInstance([[block, False]]) + ''' Mine 1 old version block, should be invalid ''' block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) block.nVersion = 3 diff --git a/qa/rpc-tests/bip65-cltv.py b/qa/rpc-tests/bip65-cltv.py index abba7fc20e..baa77b92a0 100755 --- a/qa/rpc-tests/bip65-cltv.py +++ b/qa/rpc-tests/bip65-cltv.py @@ -30,7 +30,8 @@ class BIP65Test(BitcoinTestFramework): cnt = self.nodes[0].getblockcount() # Mine some old-version blocks - self.nodes[1].generate(100) + self.nodes[1].generate(200) + cnt += 100 self.sync_all() if (self.nodes[0].getblockcount() != cnt + 100): raise AssertionError("Failed to mine 100 version=3 blocks") diff --git a/qa/rpc-tests/bipdersig-p2p.py b/qa/rpc-tests/bipdersig-p2p.py index 4e4936a4ae..3bad5af5e6 100755 --- a/qa/rpc-tests/bipdersig-p2p.py +++ b/qa/rpc-tests/bipdersig-p2p.py @@ -79,9 +79,9 @@ class BIP66Test(ComparisonTestFramework): self.nodeaddress = self.nodes[0].getnewaddress() self.last_block_time = int(time.time()) - ''' 98 more version 2 blocks ''' + ''' 298 more version 2 blocks ''' test_blocks = [] - for i in range(98): + for i in range(298): block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) block.nVersion = 2 block.rehash() @@ -124,25 +124,7 @@ class BIP66Test(ComparisonTestFramework): self.last_block_time += 1 self.tip = block.sha256 height += 1 - yield TestInstance([[block, True]]) - - ''' - Check that the new DERSIG rules are enforced in the 751st version 3 - block. - ''' - spendtx = self.create_transaction(self.nodes[0], - self.coinbase_blocks[1], self.nodeaddress, 1.0) - unDERify(spendtx) - spendtx.rehash() - - block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) - block.nVersion = 3 - block.vtx.append(spendtx) - block.hashMerkleRoot = block.calc_merkle_root() - block.rehash() - block.solve() - self.last_block_time += 1 - yield TestInstance([[block, False]]) + yield TestInstance([[block, True]]) ''' Mine 199 new version blocks on last valid tip ''' test_blocks = [] @@ -177,6 +159,24 @@ class BIP66Test(ComparisonTestFramework): height += 1 yield TestInstance([[block, True]]) + ''' + Check that the new DERSIG rules are enforced in the 951st version 3 + block. + ''' + spendtx = self.create_transaction(self.nodes[0], + self.coinbase_blocks[1], self.nodeaddress, 1.0) + unDERify(spendtx) + spendtx.rehash() + + block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) + block.nVersion = 3 + block.vtx.append(spendtx) + block.hashMerkleRoot = block.calc_merkle_root() + block.rehash() + block.solve() + self.last_block_time += 1 + yield TestInstance([[block, False]]) + ''' Mine 1 old version block, should be invalid ''' block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) block.nVersion = 2 diff --git a/src/chainparams.cpp b/src/chainparams.cpp index 86bef1e105..c7c8ce73d9 100644 --- a/src/chainparams.cpp +++ b/src/chainparams.cpp @@ -71,11 +71,10 @@ public: CMainParams() { strNetworkID = "main"; consensus.nSubsidyHalvingInterval = 210000; - consensus.nMajorityEnforceBlockUpgrade = 750; - consensus.nMajorityRejectBlockOutdated = 950; - consensus.nMajorityWindow = 1000; consensus.BIP34Height = 227931; consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8"); + consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0 + consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931 consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks consensus.nPowTargetSpacing = 10 * 60; @@ -167,11 +166,10 @@ public: CTestNetParams() { strNetworkID = "test"; consensus.nSubsidyHalvingInterval = 210000; - consensus.nMajorityEnforceBlockUpgrade = 51; - consensus.nMajorityRejectBlockOutdated = 75; - consensus.nMajorityWindow = 100; consensus.BIP34Height = 21111; consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8"); + consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6 + consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182 consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks consensus.nPowTargetSpacing = 10 * 60; @@ -247,11 +245,10 @@ public: CRegTestParams() { strNetworkID = "regtest"; consensus.nSubsidyHalvingInterval = 150; - consensus.nMajorityEnforceBlockUpgrade = 750; - consensus.nMajorityRejectBlockOutdated = 950; - consensus.nMajorityWindow = 1000; - consensus.BIP34Height = -1; // BIP34 has not necessarily activated on regtest + consensus.BIP34Height = 100000000; // BIP34 has not activated on regtest (far in the future so block v1 are not rejected in tests) consensus.BIP34Hash = uint256(); + consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in rpc activation tests) + consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in rpc activation tests) consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks consensus.nPowTargetSpacing = 10 * 60; diff --git a/src/consensus/params.h b/src/consensus/params.h index 822ec87d69..5b2f49184f 100644 --- a/src/consensus/params.h +++ b/src/consensus/params.h @@ -39,13 +39,13 @@ struct BIP9Deployment { struct Params { uint256 hashGenesisBlock; int nSubsidyHalvingInterval; - /** Used to check majorities for block version upgrade */ - int nMajorityEnforceBlockUpgrade; - int nMajorityRejectBlockOutdated; - int nMajorityWindow; /** Block height and hash at which BIP34 becomes active */ int BIP34Height; uint256 BIP34Hash; + /** Block height at which BIP65 becomes active */ + int BIP65Height; + /** Block height at which BIP66 becomes active */ + int BIP66Height; /** * Minimum blocks including miner confirmation of the total of 2016 blocks in a retargetting period, * (nPowTargetTimespan / nPowTargetSpacing) which is also used for BIP9 deployments. diff --git a/src/main.cpp b/src/main.cpp index 124bc57e7d..e92dbd72fe 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -107,11 +107,6 @@ map mapOrphanTransactions GUARDED_BY(cs_main); map::iterator, IteratorComparator>> mapOrphanTransactionsByPrev GUARDED_BY(cs_main); void EraseOrphansFor(NodeId peer) EXCLUSIVE_LOCKS_REQUIRED(cs_main); -/** - * Returns true if there are nRequired or more blocks of minVersion or above - * in the last Consensus::Params::nMajorityWindow blocks, starting at pstart and going backwards. - */ -static bool IsSuperMajority(int minVersion, const CBlockIndex* pstart, unsigned nRequired, const Consensus::Params& consensusParams); static void CheckBlockIndex(const Consensus::Params& consensusParams); /** Constant stuff for coinbase transactions we create: */ @@ -2372,15 +2367,13 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin unsigned int flags = fStrictPayToScriptHash ? SCRIPT_VERIFY_P2SH : SCRIPT_VERIFY_NONE; - // Start enforcing the DERSIG (BIP66) rules, for block.nVersion=3 blocks, - // when 75% of the network has upgraded: - if (block.nVersion >= 3 && IsSuperMajority(3, pindex->pprev, chainparams.GetConsensus().nMajorityEnforceBlockUpgrade, chainparams.GetConsensus())) { + // Start enforcing the DERSIG (BIP66) rule + if (pindex->nHeight >= chainparams.GetConsensus().BIP66Height) { flags |= SCRIPT_VERIFY_DERSIG; } - // Start enforcing CHECKLOCKTIMEVERIFY, (BIP65) for block.nVersion=4 - // blocks, when 75% of the network has upgraded: - if (block.nVersion >= 4 && IsSuperMajority(4, pindex->pprev, chainparams.GetConsensus().nMajorityEnforceBlockUpgrade, chainparams.GetConsensus())) { + // Start enforcing CHECKLOCKTIMEVERIFY (BIP65) rule + if (pindex->nHeight >= chainparams.GetConsensus().BIP65Height) { flags |= SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY; } @@ -3504,6 +3497,7 @@ std::vector GenerateCoinbaseCommitment(CBlock& block, const CBloc bool ContextualCheckBlockHeader(const CBlockHeader& block, CValidationState& state, const Consensus::Params& consensusParams, const CBlockIndex* pindexPrev, int64_t nAdjustedTime) { + const int nHeight = pindexPrev == NULL ? 0 : pindexPrev->nHeight + 1; // Check proof of work if (block.nBits != GetNextWorkRequired(pindexPrev, &block, consensusParams)) return state.DoS(100, false, REJECT_INVALID, "bad-diffbits", false, "incorrect proof of work"); @@ -3517,10 +3511,12 @@ bool ContextualCheckBlockHeader(const CBlockHeader& block, CValidationState& sta return state.Invalid(false, REJECT_INVALID, "time-too-new", "block timestamp too far in the future"); // Reject outdated version blocks when 95% (75% on testnet) of the network has upgraded: - for (int32_t version = 2; version < 5; ++version) // check for version 2, 3 and 4 upgrades - if (block.nVersion < version && IsSuperMajority(version, pindexPrev, consensusParams.nMajorityRejectBlockOutdated, consensusParams)) - return state.Invalid(false, REJECT_OBSOLETE, strprintf("bad-version(0x%08x)", version - 1), - strprintf("rejected nVersion=0x%08x block", version - 1)); + // check for version 2, 3 and 4 upgrades + if((block.nVersion < 2 && nHeight >= consensusParams.BIP34Height) || + (block.nVersion < 3 && nHeight >= consensusParams.BIP66Height) || + (block.nVersion < 4 && nHeight >= consensusParams.BIP65Height)) + return state.Invalid(false, REJECT_OBSOLETE, strprintf("bad-version(0x%08x)", block.nVersion), + strprintf("rejected nVersion=0x%08x block", block.nVersion)); return true; } @@ -3547,9 +3543,8 @@ bool ContextualCheckBlock(const CBlock& block, CValidationState& state, const CB } } - // Enforce block.nVersion=2 rule that the coinbase starts with serialized block height - // if 750 of the last 1,000 blocks are version 2 or greater (51/100 if testnet): - if (block.nVersion >= 2 && IsSuperMajority(2, pindexPrev, consensusParams.nMajorityEnforceBlockUpgrade, consensusParams)) + // Enforce rule that the coinbase starts with serialized block height + if (nHeight >= consensusParams.BIP34Height) { CScript expect = CScript() << nHeight; if (block.vtx[0].vin[0].scriptSig.size() < expect.size() || @@ -3722,19 +3717,6 @@ static bool AcceptBlock(const CBlock& block, CValidationState& state, const CCha return true; } -static bool IsSuperMajority(int minVersion, const CBlockIndex* pstart, unsigned nRequired, const Consensus::Params& consensusParams) -{ - unsigned int nFound = 0; - for (int i = 0; i < consensusParams.nMajorityWindow && nFound < nRequired && pstart != NULL; i++) - { - if (pstart->nVersion >= minVersion) - ++nFound; - pstart = pstart->pprev; - } - return (nFound >= nRequired); -} - - bool ProcessNewBlock(CValidationState& state, const CChainParams& chainparams, CNode* pfrom, const CBlock* pblock, bool fForceProcessing, const CDiskBlockPos* dbp) { { diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp index 9dc896b7af..e3c32d905a 100644 --- a/src/rpc/blockchain.cpp +++ b/src/rpc/blockchain.cpp @@ -817,22 +817,23 @@ UniValue verifychain(const UniValue& params, bool fHelp) } /** Implementation of IsSuperMajority with better feedback */ -static UniValue SoftForkMajorityDesc(int minVersion, CBlockIndex* pindex, int nRequired, const Consensus::Params& consensusParams) +static UniValue SoftForkMajorityDesc(int version, CBlockIndex* pindex, const Consensus::Params& consensusParams) { - int nFound = 0; - CBlockIndex* pstart = pindex; - for (int i = 0; i < consensusParams.nMajorityWindow && pstart != NULL; i++) - { - if (pstart->nVersion >= minVersion) - ++nFound; - pstart = pstart->pprev; - } - UniValue rv(UniValue::VOBJ); - rv.push_back(Pair("status", nFound >= nRequired)); - rv.push_back(Pair("found", nFound)); - rv.push_back(Pair("required", nRequired)); - rv.push_back(Pair("window", consensusParams.nMajorityWindow)); + bool activated = false; + switch(version) + { + case 2: + activated = pindex->nHeight >= consensusParams.BIP34Height; + break; + case 3: + activated = pindex->nHeight >= consensusParams.BIP66Height; + break; + case 4: + activated = pindex->nHeight >= consensusParams.BIP65Height; + break; + } + rv.push_back(Pair("status", activated)); return rv; } @@ -841,8 +842,7 @@ static UniValue SoftForkDesc(const std::string &name, int version, CBlockIndex* UniValue rv(UniValue::VOBJ); rv.push_back(Pair("id", name)); rv.push_back(Pair("version", version)); - rv.push_back(Pair("enforce", SoftForkMajorityDesc(version, pindex, consensusParams.nMajorityEnforceBlockUpgrade, consensusParams))); - rv.push_back(Pair("reject", SoftForkMajorityDesc(version, pindex, consensusParams.nMajorityRejectBlockOutdated, consensusParams))); + rv.push_back(Pair("reject", SoftForkMajorityDesc(version, pindex, consensusParams))); return rv; } @@ -897,13 +897,9 @@ UniValue getblockchaininfo(const UniValue& params, bool fHelp) " {\n" " \"id\": \"xxxx\", (string) name of softfork\n" " \"version\": xx, (numeric) block version\n" - " \"enforce\": { (object) progress toward enforcing the softfork rules for new-version blocks\n" + " \"reject\": { (object) progress toward rejecting pre-softfork blocks\n" " \"status\": xx, (boolean) true if threshold reached\n" - " \"found\": xx, (numeric) number of blocks with the new version found\n" - " \"required\": xx, (numeric) number of blocks required to trigger\n" - " \"window\": xx, (numeric) maximum size of examined window of recent blocks\n" " },\n" - " \"reject\": { ... } (object) progress toward rejecting pre-softfork blocks (same fields as \"enforce\")\n" " }, ...\n" " ],\n" " \"bip9_softforks\": { (object) status of BIP9 softforks in progress\n"